Andricus frondeum
(agamic)agamic:The agamic (AKA unisexual) generation of an oak gall wasp (cynipini) species consists of only female wasps, which do not mate before laying the eggs which become the male and females of the sexual generation (sexgen).
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The gall's range is computed from the range of all hosts that the gall occurs on. In some cases we have evidence that the gall does not occur across the full range of the hosts and we will remove these places from the range. For undescribed species we will show the expected range based on hosts plus where the galls have been observed.
Gall (pl. 1, fig. 6). — A transformed lateral bud, the outer brown bud scales surrounding a mass of thinner, narrower bracts. At the base in the center is a single, ovoid, thin-walled cell, 3.0 by 1.7 mm. at whose base and apex is a circle and tuft of straight, single-celled, slender white hairs 1.5 mm. long.
Habitat. — The types (dead) were cut out of galls collected at Idyllwild, Calif., on September 21, 1922. The characteristic galls have been seen on Mount Wilson, in the San Bernardino Mountains, in Sequoia National Park, at Kyburz, Los Gatos, and Shasta in California, and at Canyonville, Oreg. A similar gall on Quercus wilcoxii was noted in the Santa Catalina, Chiricahua, and Huachuca Mountains in Arizona.
